United States. Department of AgriculturePanchromatic; By USDA-SCS (AC-1333-1334; Scale 1:40,500JPEGoai:digital.library.illinois.edu:ec144370-8a10-0137-6d99-02d0d7bfd6e4-c144engPublicStereogram No. 144 - Cheyenne RiverImagerySouth Dakota--Pennington CountySouth Dakota1937-07-19University of Illinois Urbana-Champaign